English

Verb

drift off

1. (intransitive, idiomatic) To fall asleep slowly.
   • 1919, B. M. Bower, The Thunder Bird, ch. 5:

     He went to sleep, lying there under a wing of his plane, and presently Bland himself drifted off into dreams.

2. (intransitive, idiomatic) To lose concentration.

Synonyms

• (fall asleep slowly): nod off

See Wikisaurus:fall asleep